【摘要】 为贯彻石油工业发展战略目标“稳定东部，开发西部，油气并举”的方针，“九五”初期相继建成了10条高强度高韧性油气输送重要管线。本文介绍了高强度高韧性管线钢管生产所采用的焊丝的研制过程：合金化设计原则，熔敷金属评定，工业化生产试验。指出，高韧性焊缝组织特征是90％以上的针状铁素体，少量或没有先析铁素体和侧板条铁素体。焊丝合金化设计的两个系列为：Ho8C焊丝是低碳、低硫磷，一定量的钼、硼、钛、铱。Ho8D焊丝是低碳、低硫磷、高锰硅、一定量的钛、铝。更多还原

【Abstract】 In order to implement the strategy goal of petroleum industry development-stabilizing the east, exploring the west, developing both oil and natural gas, ten important high strength, high toughness oil and natural gas pipelines are set up successively in the early of "the ninth five-year project". This paper introducesthe research of welding wires which are used in producing high strength, high toughness pipelines:the designprinciple of alloying treatment, the evaluation of melted metal of the electrode, and the experiment of industrialized production. It is pointed out that the structures of high toughness weld seams contain over 90% needle-like ferrite, few or no proeutectic ferrite and flank plates or laths ferrite. The two series of the alloyingtreatment of the welding wires are as follows: Ho8C welding wires contain low C, S and P, some certainamount of Mo, B, Ti and Ir. Ho8D welding wires contain low C, S and P, high Mn and Si, some certainamount of Ti and Al.更多还原